Fasteners > Screws > Socket Countersunk Screws | Flat Head Socket Screw | Flat Head/ Countersunk Socket Screws (UNC/UNF) are manufactured to ANSI B18.3 / ASTM F835 | Made of high-grade alloy steel | Available in plain and Zinc finish. |
Fasteners > Screws > Socket Countersunk Screws | Flat Head Socket Screw | Flat Head/ Countersunk Socket Screws (UNC/UNF) are manufactured to ANSI B18.3 / ASTM F835 | Made of high-grade alloy steel | Available in plain and Zinc finish. |
in 3 offers
The lowest price for 3/8 x 2 1/2" UNC Flat Head Socket Screw Plain - Box of 50 right now is $6.00 at Bolt & Nut Australia, compared across 3 retailers.
The all-time low was $5.50 on 10 Oct 2025 — today's price is 9% above the lowest ever. That's a little above the best price we've seen.
Prices last updated 10 May 2026.
3/8 x 2 1/2" UNC Flat Head Socket Screw Plain - Box of 50
Fasteners > Screws > Socket Countersunk Screws | Flat Head Socket Screw | Flat Head/ Countersunk Socket Screws (UNC/UNF) are manufactured to ANSI B18.3 / ASTM F835 | Made of high-grade alloy steel | Available in plain and Zinc finish. |
Fasteners > Screws > Socket Countersunk Screws | Flat Head Socket Screw | Flat Head/ Countersunk Socket Screws (UNC/UNF) are manufactured to ANSI B18.3 / ASTM F835 | Made of high-grade alloy steel | Available in plain and Zinc finish. |
Last updated at 10/05/2026 18:48:41
3/8" x 16 TPI x 2-1/2" Part Thread UNC Coarse Countersunk Head Socket Screw Grade 10.9 (7/32" Key) Plain Black Uncoated ANSI B 18.3
Free delivery between Tue – Thu
Hobsons - 3/8 x 2-1/2 Plain Ansi B18.3 / Astm F835 Unc Socket Screw Countersunk H | Knc38/212 (Pack Of 50)
Delivery between 11–19 May $7.95
3/8 x 2 1/2" UNC Flat Head Socket Screw Plain - Box of 50
Delivery between 13–20 May $12.61
| Size | 3/8" |
| Thread type | UNC / BSW - Coarse |
| Drive Type | Internal Hex |
| System of Measurement | Imperial |
| Drive Size | 7/32" |
3/8" x 16 TPI x 2-1/2" Part Thread UNC Coarse Countersunk Head Socket Screw Grade 10.9 (7/32" Key) Plain Black Uncoated ANSI B 18.3
Free delivery between Tue – Thu
Hobsons - 3/8 x 2-1/2 Plain Ansi B18.3 / Astm F835 Unc Socket Screw Countersunk H | Knc38/212 (Pack Of 50)
Delivery between 11–19 May $7.95
3/8 x 2 1/2" UNC Flat Head Socket Screw Plain - Box of 50
Delivery between 13–20 May $12.61
| Size | 3/8" |
| Thread type | UNC / BSW - Coarse |
| Drive Type | Internal Hex |
| System of Measurement | Imperial |
| Drive Size | 7/32" |
